Improved blind-fastening



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JOHN -CRYEIL OF GREENPOINT, NEW YORK.

Lettcrslatent No. 94,719, dated September 14,1869.

IMPROVED BLIND-FASTENING. v

The Schedule referred tov in these Letters Patent and making part of thesamt:-

To all whom it may concern:

Beit known that I, JOHN E. ORYER, of Greenpoint, in the county ofKings,.and State of New York, have invented certain new and usefulImprovements in -Blind-Fastenings; and I do hereby declare that thefollowing is a full and exact description thereof.

My fastening is constructed in connection with the hinge, and is securedto the building with the same fastenings. This alone is not new, but mymode of' construction and operation involves some important points ofnovelty. v

,I will proceed to describe what-I consider the best means of ycarryingoutl my invention, and will afterwards designate the points which Ibelieve to be Vnew therein. The accompanying drawings form a part ofthis specification.

Figure 1 is a side elevation of'V the fastening, part-ly in section. Theparts are in the position which they assume when the blind is open.

Figure 2 is a face view, with the parts in the position which theyassume when the blind is closed.

Figure 3 is a plan view of iig. 1.V

Figure 4 is a plan view of a modification of theform of the parts. to beused to hold the blind secure in a partially closed position, as well asentirely open,

Figure 5 is a front elevation, partly broken, showing the samemodification as fig. 4.

Figures 6 and 7 show still another modification. Fig. 6 is afront viewof' the main or fixed part of' the hinge, with the latch broken off.Fig. 7 represents a vertical section of a portion of the same.

Similar letters of reference indicate corresponding parts, or tlioseparts which most nearly correspond with each other, in all the figures.

A is a flat portion, which is adapted to be secured to the wood-work atthe side of' the window, by screws in the ordinary manner.

'A1 is an aun, which extends out therefrom, and carries an uprightpivot, a, on which the turning part of' the hinge B is supported. y

The turning part may be constructed -in any approved manner, extendingdown and outward upon the blind so as to take a very firm hold thereof,if preferred. I haverepresented it as extending out only a little ways,and forming theu'sual short turn where it commences to be fitted againstthe blind., I have not represented the wood-work either of the buildingor of the blind. The hinge fits against both, and is secured thereto inthe ordinary manner, as will be readily understood.

Thefastening is effected by means of a latch, O, which is supported,when not in use, in a horizontal,

or nearly horizontal position, and which catches upon.

the upper edge of the turning part B, and holds it This modificationallows the same parts probably be struck np in dies with little labor.)VI may say here, that I prefer to make the parts of malleable cast-iron.The latch is pushed through from the rear or back of the faceplate A,and an enlarged head, or

equivalent part on the rear end of the latch, is received in a recessprepared for it in the Apiece A, so that it is free to turn to theproper extent, butcannot be drawn out.

In order to provide a suitable space for this head C', withouttoogreatly increasing the thickness of the part A, I form the latter with acasing, A, which projects outward from theface` above the part A, asrepresented in the several figures. This' -casing is hollow, and itshollow interior receives the head G', onthe back end of the latch G. Itsform varies, `according to the form of the head, as will appear below.

The several modifications which I propose in the form of the parts, allconform to the above description, but beyond this it will be necessaryto describe them separately.

Referring to figs..1, 2, and 3, the rear end of' the latch C is providedwith a head at the back end, which is in the form of a short cylinder,extending transversely to the latch. It is received in a correspondingrecess, andallows the latch to be simply raised and lowered. It cannotbe turned laterally to any considerable extent. It allows the latch toperform the single function of catching upon the part B, and holding theblind open.

4Referring to figs. 4 and 5, the head or enlargement C', on the back endof the latch C, is in theform ofa sphere. It fits in a correspondingrecess in the parts AA, and the opening through the front of the recessis not, (as inthe form first described,) a mere narrow slot up and down;but is wider at the front, so as to allow a considerable lateralmovement or swinging motion sidewise of the latch. The latch is alsoprovided with a notch, c', at about the middle of its length.

This form of the invention performs the same function of holding theblindopen as the form first described, and it also performs theadditional function of holding the blind firmly in a partially closedposition. It is frequently desired, in admitting air and excluding thesunshine, to holda blind alittle wayopen, and I have provided forattaining this :end by' very. simple means. The latch with this form ofthe invention being in its' ordinary position, (that shown in the otherform, fig. 3,) the blind on swinging back raises the latch, which againfalls by its. gravity, and embraces the upper edge of the part B in thenotch c, and the blind is thereby held firmly open. All this is precisely the same in this second form of the invention, as in the first,and the liberation of the blind with this form, as .also a third to bedescribed, is the same; that is to say, the finger is applied under thelatch C, to lift it, and immediately that the notchc is clear of thepart 'B, the blind is free to close.

Now, to render available the additional function of' nthis second form`of the fastening, it is necessary simply toA bring the blind into aposition about two-thirds closed, that isto say, standingat an angle ofabout sixty degrees with the window, and vthen to lift the latch C, andswing" it laterally into the lposition shown in fig. 4. In thisposition, the notch o drops upon and secures the part B by embracing itsupper edge, and it now holds the blind rnily in the partially closedposition. When it is desired to change the blind from this position` thelatch 0 is lifted by the finger, and moved'back to its originalposition.

In these lateral movements the latch O swings easily, being liftedsuliiciently to move it over the pivot a.

Referring to figs. 6 and` 7, I have here represented af'orm of thedevice which involves a little more labor and expense. It corresponds infunction with that last described, that is to say, it performs theduties both of holding the blind open, and of holding it partiallyclosed, but the head, as I have termed it, at the back end of the latchO, is in the form of a short vertical cylinder, adapted to turn`horizontally, and'allow for the swinging or sidewise motion of thelatch. The liberty for the vertical motion of the latch is obtained byconnecting the latch loosely to this cylinder. This is effected bycasting the cylinder with a mortise or slot extending into or throughit,'and riveting the flat end of the latch loosely therein.

' Instead of mortising thelatch through theupright cylinder in thisformof the device, I can, if preferred, fork the latch and let it'embrace the fiattened part of I esteem it important in all the formstovprotect the latch C against any'force tending to press it back intothe wood-work. It will be observed that the blind, in

swinging back into position, mayact with considerablen force against thebevelled end of the latch before liftv ing it. This will be particularlyliable to occur when the parts are very rough or rusty. Now, if thelatch O were to be pressed backward by such force against the wood-work,it might wear or crush the wood so as to allow it to move backward intothe wood-work, and thus derange lthe action. In all the forms of myinvention, I protect the device against such derangement' by making anoffset on the under side of the latch .0,

as indicated by c2 striking against the lower part of the projection A2.This receives -all the force tending to move the latch backward.

Some of the' advantages'due to certain parts of my invention may berealized without the use of the other parts, but I prefer to employ theWhole .in-combination, as here described.

What I claim, is-

1. A fastening-latch, passed through from'the rear of the hinge, andsecured thereto by a head, to form a joint.

2. In combination with a latch, arranged as described, the offset or.shoulder c2, to resist any backward motion of the latch. l

3. In combination with theabove, the notch c1 in the latch, to holdthefblind'in a partially closed position.

. JOHN E. CRYER. Witnesses O. G. Llvnves, THOMAS I). STETSON.

